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authorAndre Przywara <andre.przywara@arm.com>2017-11-17 20:58:21 +0300
committerChristoffer Dall <christoffer.dall@linaro.org>2017-11-29 18:46:10 +0300
commit285a90e36b138b707c4a9850f2500774b7191c99 (patch)
tree6c230122f28c33255833360966915a254f2c4828 /virt
parentec6449a9c2296b1c04f6219f7473e0c2fedecfed (diff)
downloadlinux-285a90e36b138b707c4a9850f2500774b7191c99.tar.xz
KVM: arm/arm64: VGIC: extend !vgic_is_initialized guard
Commit f39d16cbabf9 ("KVM: arm/arm64: Guard kvm_vgic_map_is_active against !vgic_initialized") introduced a check whether the VGIC has been initialized before accessing the spinlock and the VGIC data structure. However the vgic_get_irq() call in the variable declaration sneaked through the net, so lets make sure that this also gets called only after we actually allocated the arrays this function accesses. Reviewed-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/arm/vgic/vgic.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/virt/kvm/arm/vgic/vgic.c b/virt/kvm/arm/vgic/vgic.c
index b168a328a9e0..786cce7bd2ec 100644
--- a/virt/kvm/arm/vgic/vgic.c
+++ b/virt/kvm/arm/vgic/vgic.c
@@ -823,13 +823,14 @@ void vgic_kick_vcpus(struct kvm *kvm)
bool kvm_vgic_map_is_active(struct kvm_vcpu *vcpu, unsigned int vintid)
{
- struct vgic_irq *irq = vgic_get_irq(vcpu->kvm, vcpu, vintid);
+ struct vgic_irq *irq;
bool map_is_active;
unsigned long flags;
if (!vgic_initialized(vcpu->kvm))
return false;
+ irq = vgic_get_irq(vcpu->kvm, vcpu, vintid);
spin_lock_irqsave(&irq->irq_lock, flags);
map_is_active = irq->hw && irq->active;
spin_unlock_irqrestore(&irq->irq_lock, flags);